Assuming that wireless coverage is not required in the central area, which square footage (square meter) value should a network architect use when determining the number of APs in a capacity design for each floor?

NewStellar has a main corporate campus in a business park with two adjacent buildings. Each building has three floors and each floor is 322 x 175 feet (98 x 53 meters) for 56,350 square feet (5,235 square meters) total. The ceiling for each floor is 12 feet (3.6 meters) high with a drop-down ceiling at 10 feet (3 meters).

The network architect has given you one floor to analyze, Building 1 Floor 2, shown in the attached exhibit.

This floor has a central main corridor with washrooms, stairs, elevators and supply and network cabinets. There are cubicles around the perimeter of the floor. The central part main corridor’s dimensions contain 9,350 square feet (870 square meters).

Assuming that wireless coverage is not required in the central area, which square footage (square meter) value should a network architect use when determining the number of APs in a capacity design for each floor?
A . 55.750 square feet {5,175 square meters)
B . 56.350 square feet {5,235 square meters)
C . 47.000 square feet {4,365 square meters)
D . 338,100 feet {31,410 square meters)

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Answer: B